We’ve included a simple way to display the latest tweets. First, you have to login and create Twitter widgest for loading twitts on your website :

 
Log into your Twitter account and navigate to the settings section.
Click on Widgets in the left sidebar.
Click on the Create new button.
Complete the information under the User timeline tab (Username, Options, Height, Theme, Link Color) 
Click the Create widget button.
Copy the Twitter HTML code from the box that is display under the Preview.
Log into your DNN website.
Add an HTML module in a content pane.
Hover over the module's gear icon and click Settings.
Select the Module Settings tab and expand the Advanced Settings section.
Paste the Twitter HTML code into the Header field.
Click the Update button at the bottom of the page.
Hover over the HTML module's pencil icon and select Edit Content.
Click HTML at the bottom of the text editor to view HTML mode.
Add a non-breaking space (   ) and click the Save button.

Thats it!